{"id":386548,"date":"2024-09-24T15:55:22","date_gmt":"2024-09-24T15:55:22","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/magnitude-of-plane-wave-source-is-not-1\/"},"modified":"2024-09-24T15:55:22","modified_gmt":"2024-09-24T15:55:22","slug":"magnitude-of-plane-wave-source-is-not-1","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/magnitude-of-plane-wave-source-is-not-1\/","title":{"rendered":"Magnitude of plane wave source is not 1"},"content":{"rendered":"

<p>To whom it may concern,<\/p><p>I have been scripting various FDTD simulations with a plane wave propogating in the -z direction, and have some monitors nearby.  I did not script an explicit value for the electric field. Looking online, it seems that the magnitude of the electric field is 1 V\/m by default. However, when pulling E_x and E_y from power monitors, I find that <|E_x|> and <|E_y|> can be greater than 1. For clarity, <|E_x|> refers to the average of the absolute value of E_x through the monitor.<\/p><p>1) Isn’t |E|=sqrt((abs|E_x|^2)+(abs|E_y|^2)+(abs|E_z|^2)) ? If so, why does the monitor read a value greater than 1?<\/p><p>2) Why does this happen?<\/p><p>I am willing to dm files upon request.<\/p><\/p>\n","protected":false},"template":"","class_list":["post-386548","topic","type-topic","status-publish","hentry","topic-tag-fdtd","topic-tag-scripting"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t